Display Device Connection Lines with 45-Degree Oblique Segments
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Solution Overview
Problem
Current display devices face challenges in minimizing the non-display area while maximizing the display area, particularly in the arrangement and connection of pixel driving units with emission units, leading to inefficiencies in voltage distribution and image quality.
Innovation Solution
The display device incorporates a substrate with a first and second display area, featuring pixels with transistors and light-emitting elements connected by connection lines that include straight and oblique portions, arranged uniformly to reduce the non-display area and optimize voltage distribution, with a method of fabricating these lines using a design program to search for optimal paths that minimize movement and maintain uniform spacing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If connection lines are arranged to connect pixel driving units with emission units, then voltage distribution is achieved, but non-display area increases and display area is reduced
Solution Approach 1:
The connection lines utilize oblique portions at 45° angles to connect pixel driving units with emission units, transforming the connection path from simple linear to multi-dimensional angular paths. This allows connection lines to traverse the display area more efficiently, reducing the non-display area while maintaining proper voltage distribution.
Solution Approach 2:
Each connection line is divided into multiple segments including straight portions and oblique portions at 45° angles. This segmentation allows the connection lines to navigate around pixel structures more effectively, minimizing the space occupied by non-display areas while ensuring proper electrical connections.
2Adaptability or versatility
If connection lines have irregular shapes, then connection flexibility is improved, but manufacturing precision and uniformity deteriorate
Solution Approach 1:
The connection lines are designed with specific angular parameters (45° oblique portions) and geometric constraints (equal angles between straight and oblique portions). These parameter specifications ensure that while the lines maintain flexible connectivity, they also follow predictable patterns that improve manufacturing precision and uniformity across the display.
Solution Approach 2:
The connection lines incorporate asymmetric angular configurations (45° oblique portions) that provide flexible connections while maintaining manufacturing consistency. The asymmetric angles allow the lines to adapt to different pixel arrangements while the standardized angle measurement ensures uniform manufacturing processes.
3Area of stationary object
If connection lines are made longer to expand display area, then display area increases, but voltage drop and deviations increase
Solution Approach 1:
By utilizing oblique 45° portions in the connection lines, the patent creates more efficient spatial paths that reduce the effective length of connection lines while expanding the display area. This dimensional approach allows voltage to be distributed more uniformly across longer display areas without excessive voltage drop.
Solution Approach 2:
The connection line design with standardized 45° oblique portions and equal angles creates more uniform electrical pathways that promote equipotential distribution. This geometric standardization ensures that voltage is distributed more evenly across the display area, reducing voltage drop deviations even as the display area expands.
Data Source
AI summary
A display device includes: a substrate comprising a first display area and a second display area around the first display area; pixels on the substrate and comprising respective pixel transistors in the first display area, and respective light-emitting elements in the first display area and the second display area and connected to the respective pixel transistors; and connection lines connecting the pixel transistors with the light-emitting elements, respectively, wherein each of the connection lines comprises one or more straight portions extending in a first direction, and one or more oblique portions connected to the straight portions and extending in an oblique direction inclined by an angle equal to a multiple of 45° with respect to the first direction, and wherein angles formed by the straight portions and the oblique portions of the connection lines are equal to each other.